fix implicit noexcept warnings

Author: tornaria

cypari2/closure.pyx

@@ -100,7 +100,7 @@ cdef extern from *:
 
 
 cdef GEN call_python(GEN arg1, GEN arg2, GEN arg3, GEN arg4, GEN arg5,
-                     ulong nargs, ulong py_func):
+                     ulong nargs, ulong py_func) noexcept:
     """
     This function, which will be installed in PARI, is a front-end for
     ``call_python_func_impl``.

cypari2/convert.pxd

@@ -22,7 +22,7 @@ cpdef gen_to_integer(Gen x)
 
 # Conversion C -> PARI
 
-cdef inline GEN double_to_REAL(double x):
+cdef inline GEN double_to_REAL(double x) noexcept:
     # PARI has an odd concept where it attempts to track the accuracy
     # of floating-point 0; a floating-point zero might be 0.0e-20
     # (meaning roughly that it might represent any number in the
@@ -42,7 +42,7 @@ cdef inline GEN double_to_REAL(double x):
         return dbltor(x)
 
 
-cdef inline GEN doubles_to_COMPLEX(double re, double im):
+cdef inline GEN doubles_to_COMPLEX(double re, double im) noexcept:
     cdef GEN g = cgetg(3, t_COMPLEX)
     if re == 0:
         set_gel(g, 1, gen_0)
@@ -57,15 +57,15 @@ cdef inline GEN doubles_to_COMPLEX(double re, double im):
 
 # Conversion Python -> PARI
 
-cdef inline GEN PyInt_AS_GEN(x):
+cdef inline GEN PyInt_AS_GEN(x) except? NULL:
     return stoi(PyInt_AS_LONG(x))
 
-cdef GEN PyLong_AS_GEN(py_long x)
+cdef GEN PyLong_AS_GEN(py_long x) noexcept
 
-cdef inline GEN PyFloat_AS_GEN(x):
+cdef inline GEN PyFloat_AS_GEN(x) except? NULL:
     return double_to_REAL(PyFloat_AS_DOUBLE(x))
 
-cdef inline GEN PyComplex_AS_GEN(x):
+cdef inline GEN PyComplex_AS_GEN(x) except? NULL:
     return doubles_to_COMPLEX(
         PyComplex_RealAsDouble(x), PyComplex_ImagAsDouble(x))
 

cypari2/convert.pyx

@@ -455,7 +455,7 @@ cdef PyLong_FromINT(GEN g):
 # Conversion Python -> PARI
 ########################################################################
 
-cdef GEN PyLong_AS_GEN(py_long x):
+cdef GEN PyLong_AS_GEN(py_long x) noexcept:
     cdef const digit* D = ob_digit(x)
 
     # Size of the input

cypari2/gen.pxd

@@ -24,7 +24,7 @@ cdef class Gen(Gen_base):
     # memory allocated by gclone(). For constants, this is NULL.
     cdef GEN address
 
-    cdef inline pari_sp sp(self):
+    cdef inline pari_sp sp(self) noexcept:
         return <pari_sp>self.address
 
     # The Gen objects on the PARI stack form a linked list, from the

cypari2/gen.pyx

@@ -81,7 +81,7 @@ include 'auto_gen.pxi'
 
 
 cdef bint ellwp_flag1_bug = -1
-cdef inline bint have_ellwp_flag1_bug():
+cdef inline bint have_ellwp_flag1_bug() except -1:
     """
     The PARI function ``ellwp(..., flag=1)`` has a bug in PARI versions
     2.9.x where the derivative is a factor 2 too small.

cypari2/handle_error.pxd

@@ -1,5 +1,5 @@
 from .types cimport GEN
 
-cdef void _pari_init_error_handling()
+cdef void _pari_init_error_handling() noexcept
 cdef int _pari_err_handle(GEN E) except 0
-cdef void _pari_err_recover(long errnum)
+cdef void _pari_err_recover(long errnum) noexcept

cypari2/handle_error.pyx

@@ -126,7 +126,7 @@ class PariError(RuntimeError):
         return self.errtext().rstrip(" .:")
 
 
-cdef void _pari_init_error_handling():
+cdef void _pari_init_error_handling() noexcept:
     """
     Set up our code for handling PARI errors.
 
@@ -211,7 +211,7 @@ cdef int _pari_err_handle(GEN E) except 0:
     raise PariError(errnum, pari_error_string, clone_gen_noclear(E))
 
 
-cdef void _pari_err_recover(long errnum):
+cdef void _pari_err_recover(long errnum) noexcept:
     """
     Reset the error string and jump back to ``sig_on()``, either to
     retry the code (in case of no error) or to make the already-raised

cypari2/pari_instance.pxd

@@ -3,9 +3,9 @@ cimport cython
 
 from .gen cimport Gen
 
-cpdef long prec_bits_to_words(unsigned long prec_in_bits)
-cpdef long prec_words_to_bits(long prec_in_words)
-cpdef long default_bitprec()
+cpdef long prec_bits_to_words(unsigned long prec_in_bits) noexcept
+cpdef long prec_words_to_bits(long prec_in_words) noexcept
+cpdef long default_bitprec() noexcept
 
 cdef class Pari_auto:
     pass

cypari2/pari_instance.pyx

@@ -334,7 +334,7 @@ def prec_dec_to_bits(long prec_in_dec):
     return int(prec_in_dec*log_10 + 1.0)  # Add one to round up
 
 
-cpdef long prec_bits_to_words(unsigned long prec_in_bits):
+cpdef long prec_bits_to_words(unsigned long prec_in_bits) noexcept:
     r"""
     Convert from precision expressed in bits to pari real precision
     expressed in words. Note: this rounds up to the nearest word,
@@ -362,7 +362,7 @@ cpdef long prec_bits_to_words(unsigned long prec_in_bits):
     return (prec_in_bits - 1)//wordsize + 3
 
 
-cpdef long prec_words_to_bits(long prec_in_words):
+cpdef long prec_words_to_bits(long prec_in_words) noexcept:
     r"""
     Convert from pari real precision expressed in words to precision
     expressed in bits. Note: this adjusts for the two codewords of a
@@ -385,7 +385,7 @@ cpdef long prec_words_to_bits(long prec_in_words):
     return (prec_in_words - 2) * BITS_IN_LONG
 
 
-cpdef long default_bitprec():
+cpdef long default_bitprec() noexcept:
     r"""
     Return the default precision in bits.
 
@@ -446,7 +446,7 @@ def prec_words_to_dec(long prec_in_words):
 # of C library functions like puts().
 cdef PariOUT python_pariOut
 
-cdef void python_putchar(char c):
+cdef void python_putchar(char c) noexcept:
     cdef char s[2]
     s[0] = c
     s[1] = 0
@@ -459,15 +459,15 @@ cdef void python_putchar(char c):
     # so it doesn't print one when an error occurs.
     pari_set_last_newline(1)
 
-cdef void python_puts(const char* s):
+cdef void python_puts(const char* s) noexcept:
     try:
         # avoid string conversion if possible
         sys.stdout.buffer.write(s)
     except AttributeError:
         sys.stdout.write(to_string(s))
     pari_set_last_newline(1)
 
-cdef void python_flush():
+cdef void python_flush() noexcept:
     sys.stdout.flush()
 
 include 'auto_instance.pxi'
@@ -1436,22 +1436,22 @@ cdef long get_var(v) except -2:
 # Monkey-patched versions of default(parisize) and default(parisizemax)
 # which call before_resize() and after_resize().
 # The monkey-patching is set up in PariInstance.__cinit__
-cdef GEN patched_parisize(const char* v, long flag):
-    # Cast to int(*)() to avoid exception handling
-    if (<int(*)()>before_resize)():
+cdef GEN patched_parisize(const char* v, long flag) noexcept:
+    # Cast to `int(*)() noexcept` to avoid exception handling
+    if (<int(*)() noexcept>before_resize)():
         sig_error()
     return sd_parisize(v, flag)
 
 
-cdef GEN patched_parisizemax(const char* v, long flag):
-    # Cast to int(*)() to avoid exception handling
-    if (<int(*)()>before_resize)():
+cdef GEN patched_parisizemax(const char* v, long flag) noexcept:
+    # Cast to `int(*)() noexcept` to avoid exception handling
+    if (<int(*)() noexcept>before_resize)():
         sig_error()
     return sd_parisizemax(v, flag)
 
 
 IF HAVE_PLOT_SVG:
-    cdef void get_plot_ipython(PARI_plot* T):
+    cdef void get_plot_ipython(PARI_plot* T) noexcept:
         # Values copied from src/graph/plotsvg.c in PARI sources
         T.width = 480
         T.height = 320
@@ -1462,7 +1462,7 @@ IF HAVE_PLOT_SVG:
 
         T.draw = draw_ipython
 
-    cdef void draw_ipython(PARI_plot *T, GEN w, GEN x, GEN y):
+    cdef void draw_ipython(PARI_plot *T, GEN w, GEN x, GEN y) noexcept:
         global avma
         cdef pari_sp av = avma
         cdef char* svg = rect2svg(w, x, y, T)

cypari2/paridecl.pxd

@@ -5327,7 +5327,7 @@ cdef extern from *:     # PARI headers already included by types.pxd
 
 
 # Work around a bug in PARI's is_universal_constant()
-cdef inline int is_universal_constant(GEN x):
+cdef inline int is_universal_constant(GEN x) noexcept:
     return _is_universal_constant(x) or (x is err_e_STACK)